[Tex/LaTex] Shortcuts for subscript and superscript in non-math context

subscriptssuperscripts

all. I need some help with subscript and superscript in a non-math context. I am using \textsubscript now but this turned out to be very inconvenient. I tried $a_1$ but the letter turned out to be in italic, which is not what I want. Is there a similar shortcut for sub(super)script that does not make letters in italics? Thanks.

Best Answer

Are the following two shortcut macros

\newcommand\tsub[1]{\textsubscript{#1}}
\newcommand\tsup[1]{\textsuperscript{#1}}

convenient enough?